articleelement.cpp

来自「深入浅出Visual C++入门进阶与应用实例 随书光盘 作者 何志丹」· C++ 代码 · 共 284 行

// ArticleElement.cpp: implementation of the CArticleElement class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "ArticleElement.h"
#include "GlobeFun.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CArticleElement::CArticleElement()
{

}

CArticleElement::~CArticleElement()
{

}


CString CArticleTextElement::GetTextWithCurBBSFormat(int nMaxCharCount)
{
	if(nMaxCharCount >= m_strText.GetLength())
		return m_strText ;//最大长度比当前文字长,直接返回
	
	if(nMaxCharCount < 20 )//最大字符数太小,返回空
		return "";
	
	//压缩算法: 取前面一部分和后面一部分,中间加几个省略号,不能拆分汉字,否则会有乱码
	CString strShortText ;
	int nLeftCount	= (nMaxCharCount - 6 ) / 2  ;
	int nRightCount	= (nMaxCharCount - 6) - nLeftCount ;
	for(int i = nLeftCount -1  ; i >= 0 ; i-- )
	{
		char ch = m_strText[i] ;
		if(ch >=  0 &&  ch < 128 )
			break ;
	}
	int nChineseCharCount = (nLeftCount -1) - i ;
	if(1 == nChineseCharCount % 2 )
		nLeftCount -- ; //前边有奇数个汉字字符,汉字被拆分,会有乱码
	strShortText = m_strText.Left(nLeftCount);
	
	strShortText += "\r\n\r\n..(为了访问速度,省略若干字)\r\n\r\n";
	
	for( i = nRightCount + 1 ; i <= m_strText.GetLength() ; i++ )
	{
		char ch = m_strText.Right(i)[0];
		if(ch >= 0 && ch < 128)
			break; 
	}
	nChineseCharCount = i - (nRightCount + 1);
	if(1 == nChineseCharCount % 2 )
		nRightCount ++ ;//前面有奇数个汉字字符,汉字被拆分,会有乱码
	strShortText += m_strText.Right(nRightCount);

	return strShortText ;
}

CString CArticleLinkElement::GetTextWithCurBBSFormat(int nMaxCharCount)
{	
	char szLinkFormat[1000] = {0};
	GetPrivateProfileString("设置","链接格式","#Url#出错了#Text#",szLinkFormat,999,GetConfigurationfileName());

	CString strLinkFormat = szLinkFormat ;
	strLinkFormat.Replace("#Url#",m_strUrl);
	strLinkFormat.Replace("#Text#",m_strText);
	return strLinkFormat;
}

CString CArticleLinkElement::GetTextWithHtmlLink()
{
	return ::GetTextWithHtmlLink(m_strText,m_strUrl);
}

int CArticleTextElement::GetCurBBSFormatTextLength()
{
	return m_strText.GetLength() ;
}

int CArticleLinkElement::GetCurBBSFormatTextLength()
{
	char szLinkFormat[1000] = {0} ;
	GetPrivateProfileString("设置","链接格式","#Url#出错了#Text#",szLinkFormat,999,GetConfigurationfileName());
	
	CString strLinkFormat = szLinkFormat ;
	strLinkFormat.Replace("#Url#",m_strUrl);
	strLinkFormat.Replace("#Text#",m_strText);
	return strLinkFormat.GetLength();
}

CArticleElements::CArticleElements()
{
	m_arArticleElements.RemoveAll();
}

CArticleElements::~CArticleElements()
{
	Empty();
}

CArticleElements& CArticleElements::operator +=(CString strContent)
{

	CArticleElement * pArtEle ;
	do 
	{
		int nPosBegin	= strContent.Find("[Url=");
		int nPosEnd		= strContent.Find("[/Url]");
		if(-1 == nPosBegin || -1 == nPosEnd )
			break;
		pArtEle = (CArticleElement*)new CArticleTextElement(strContent.Left(nPosBegin));
		m_arArticleElements.Add(pArtEle);//文章元素
		pArtEle = (CArticleElement*)new CArticleLinkElement(strContent.Mid(nPosBegin,nPosEnd - nPosBegin + strlen("[/Url]")));
		m_arArticleElements.Add(pArtEle);//链接元素
		strContent = strContent.Mid(nPosEnd + strlen("[/Url]"));
	} while(true);

	pArtEle = (CArticleElement*)new CArticleTextElement(strContent);
	m_arArticleElements.Add(pArtEle);
	
	return *this ;
}

CArticleElements& CArticleElements::operator =(CString strContent)
{

	Empty();
	*this += strContent ;
	return *this ;
}

CArticleTextElement::CArticleTextElement()
{
	
}

CArticleTextElement::~CArticleTextElement()
{
	
}

CArticleTextElement::CArticleTextElement(CString strContent)
{
	m_strText = strContent ;
}

CArticleLinkElement::CArticleLinkElement()
{

}

CArticleLinkElement::~CArticleLinkElement()
{
}

CArticleLinkElement::CArticleLinkElement(CString strContent)
{
	strContent = strContent.Mid(strlen("[Url="),strContent.GetLength() - strlen("[Url=[/Url]"));
	int nPos = strContent.Find("]");
	m_strText = strContent.Mid(nPos+1);
	m_strUrl  = strContent.Left(nPos);

}

void CArticleElements::Empty()
{
	for(int i = 0 ; i < m_arArticleElements.GetSize() ; i++ )
	{
		CArticleElement * pEle = m_arArticleElements[i] ;
		if(NULL == pEle )
			continue ;
		delete pEle ;
	}
	m_arArticleElements.RemoveAll();
}

bool CArticleElements::MakeTextWithCurBBSFormat(int nEleMaxCharCount, int nCharAPage, CStringArray &arTexts)
{
	arTexts.RemoveAll() ;
	
	ASSERT( nEleMaxCharCount <= nCharAPage );
	
	CString strText ;
	for(int i = 0 ; i < m_arArticleElements.GetSize() ; i++ )
	{
		CArticleElement * pEle = m_arArticleElements[i] ;
		if(NULL == pEle)
		{
			ASSERT(false);
			continue ;
		}
		CString strTemp = pEle->GetTextWithCurBBSFormat(nEleMaxCharCount);
		if(strTemp.IsEmpty())
			continue ;//出错或本身为空无需处理
		if(strTemp.GetLength() + strText.GetLength() > nCharAPage )
		{
			arTexts.Add(strText);
			strText = strTemp ;
		}
		else
			strText += strTemp ;
	}

	arTexts.Add(strText);

	return true ;
}

CString CArticleElements::MakeTextWithHtmlLink()
{	
	CString strText ;
	for(int i = 0 ; i < m_arArticleElements.GetSize() ; i++ )
	{
		CArticleElement * pEle = m_arArticleElements[i] ;
		if(NULL == pEle)
		{
			ASSERT(false);
			continue ;
		}
		CString strTemp = pEle->GetTextWithHtmlLink();
		if(strTemp.IsEmpty())
			continue ;//出错或本身为空无需处理
	    strText += strTemp ;
	}
	
	return strText ;
}

bool CArticleElements::AddLink(CString strText, CString strUrl)
{
	CArticleElement * pArtEle = (CArticleElement*)new CArticleLinkElement(strText,strUrl);
	m_arArticleElements.Add(pArtEle);

	return true ;
}

CArticleLinkElement::CArticleLinkElement(CString strText, CString strUrl)
{
	m_strText = strText ;
	m_strUrl  = strUrl ;
}




CString CArticleTextElement::GetTextWithHtmlLink()
{
	return m_strText ;
}

CString CArticleElements::MakeTextWithCurBBSFormat()
{
	const int nEleMaxCharCount = 10000 ;

	CString strText ;
	for(int i = 0 ; i < m_arArticleElements.GetSize() ; i++ )
	{
		CArticleElement * pEle = m_arArticleElements[i] ;
		if(NULL == pEle)
		{
			ASSERT(false);
			continue ;
		}
		
		CString strTemp = pEle->GetTextWithCurBBSFormat(nEleMaxCharCount);
		if(strTemp.IsEmpty())
			continue ;//出错或本身为空无需处理
	
		strText += strTemp ;
	}
	
	return strText ;
}